The yellow-throated tinkerbird (Pogoniulus subsulphureus) is a species of bird in the Lybiidae family (African barbets). Yellow-throated tinkerbirds located closer to the coast, as well as those in louder environments, have been found to make higher-pitched vocalizations.[3]
^ abSebastianelli, Matteo; Blumstein, Daniel T.; Kirschel, Alexander N. G. (2020-06-18). "Ambient noise from ocean surf drives frequency shifts in non-passerine bird song". bioRxiv10.1101/2020.06.17.156232.